<template>
    <HomePanel ref="target" title="热门品牌" sub-title="国际经典 品质保证">
        <template v-slot:right>
            <a href="javascript:;" :class="{ disabled: index === 0 }" @click="toggleFn(-1)"
                class="iconfont icon-angle-left prev">-</a>
            <a href="javascript:;" :class="{ disabled: index === 1 }" @click="toggleFn(1)"
                class="iconfont icon-angle-right next">+</a>
        </template>
        <div class="box" ref="box">
            <transition name="fade">
                <ul v-if="result.length" :style="`transform:translateX(${-index * 1240}px);`" class="list">
                    <li v-for="(item, index) in result" :key="index">
                        <RouterLink to="/">
                            <img :src="item.picture" alt="">
                        </RouterLink>
                    </li>
                </ul>
                <div v-else class="skeleton">
                    <XtxSkeleton class="item" animated v-for="i in 5" :key="i" bg="e4e4e4" width="240px"  height="305px" />
                </div>
            </transition>
        </div>
    </HomePanel>
</template>
  
<script>
import { ref } from 'vue'
import HomePanel from './home-panel'
import { findBrand } from '@/api/home';
import { useLazyData } from '@/hooks'
import XtxSkeleton from '@/components/library/xtx-skeleton.vue';
export default {
    name: 'HomeBrand',
    components: { HomePanel, XtxSkeleton },
    setup() {
        // let result = ref([])
        // findBrand(10).then(res => {
        //     result.value = res.result
        // })
        const { target, result } = useLazyData(() => findBrand(10))
        const index = ref(0) //切换页数 0 -- X 页  目前只有0 1 两页数据
        const toggleFn = (step) => {
            const currentIndex = index.value + step
            if (currentIndex < 0 || currentIndex > 1) {
                // 目前只有0 1 两页数据
                return
            }
            index.value = currentIndex
        }
        return {
            result,
            target,
            toggleFn,
            index
        }
    }
}
</script>
  
<style scoped lang='less'>
.home-panel {
    background: #f5f5f5
}

.skeleton {
    width: 100%;
    display: flex;

    .item {
        margin-right: 10px;

        &:nth-child(5n) {
            margin-right: 0;
        }
    }
}

.iconfont {
    width: 20px;
    height: 20px;
    background: #ccc;
    color: #fff;
    display: inline-block;
    text-align: center;

    margin-left: 5px;
    background: @xtxColor;

    &::before {
        font-size: 12px;
        position: relative;
        top: -2px
    }

    &.disabled {
        background: #ccc;
        cursor: not-allowed;
    }
}

.box {
    display: flex;
    width: 100%;
    height: 345px;
    overflow: hidden;
    padding-bottom: 40px;

    .list {
        width: 200%;
        display: flex;
        transition: all 1s;

        li {
            margin-right: 10px;
            width: 240px;

            &:nth-child(5n) {
                margin-right: 0;
            }

            img {
                width: 240px;
                height: 305px;
            }
        }
    }
}
</style>
  